Documentation for NHGIS datasets is available here.

Research using NHGIS data should cite it as:

Steven Manson, Jonathan Schroeder, David Van Riper, Tracy Kugler, and Steven Ruggles. IPUMS National Historical Geographic Information System: Version 17.0 [dataset]. Minneapolis, MN: IPUMS. 2022. http://doi.org/10.18128/D050.V17.0

For policy briefs or articles in the popular press, we recommend that you cite the use of NHGIS data as follows:

IPUMS NHGIS, University of Minnesota, www.nhgis.org


Created 2023-Aug-23